Intake Charge Pressure Control System Check

WARNING: This page is about a different variant/trim than selected.

Disconnect the hose (black) from the turbocharger wastegate solenoid and connect a three way joint between the hose and the solenoid valve.
Connect a hand pump (pressurized type) to the three-way joint.
Use the turbocharger wastegate actuator control boost nipple of air outlet fitting to disconnect the boost hose. Plug this nipple.
CAUTION: Do not apply the pressure of 94 kPa or more to prevent the diaphragm damage.

Applying a pressure with the hand pump, check tightness both when the hose end is closed and when it is open.

Fig 1: Checking Intake Charge Pressure Control System Using Hand Vacuum Pump

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: Locating Turbocharger Boost Hose

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

INTAKE CHARGE PRESSURE FUNCTION TABLE

Engine state	Hose end	Normal state
Stop (Ignition switch: ON position)	Opened	Pressure leaks.
Stop (Ignition switch: ON position)	Closed	Pressure is maintained.
Rapid racing	Closed	Pressure leaks.